<!DOCTYPE html>
<html>
<title>表格</title>
<head>跨行列表格</head>
<body>
    
    <table border="1">
    <tr>
      <th colspan="3">表头</th>
      <!-- <td rowspan="2">emmm</td> -->
    </tr>
    <tr>
        <th rowspan="2">emmm</th>
        <td>0001</td>
        <td>0002</td>
        
      </tr>
    <tr>
        <td>0003</td>
        <td>0004</td>
    </tr>
    </table>


</body>

</html>